Marion County, Indianapolis Rat Control Situation:
						Hello David, I have been reading the information that you have on line about squirrels in the attic. We have something in our attic and cannot figure out what it is, nor have we been able to trap it, nor has it been caught in a rat trap. I hear this creature or creatures ??? during the day, as well as at night. There does not seem to be a particular favorite time that they move around. Perhaps the morning is very quiet, and there is more activity in the afternoon and evening. My bedroom is quite a distance from the area that we hear this creature in, so I would not hear it at night even if it is moving around a lot at night. 
I mostly have heard scratching in the walls,  and at one point did hear a big thud. The odd thing about this creature is this. We set a live trap with peanut butter in it, and what ever it is carried large pieces of insulation inside the trap to cover the peanut butter. Like really large- maybe a 6 X 6 inch piece. We feel the trap was not set properly because it did not shut.  Next day we put meat in it, thinking it may be an animal that would want meat like an opossum.  All this time our rat traps have remained in place but this creature DAILY overs all the traps with insulation....without getting caught.  We have not seen anything enter or leave. We found one area that is gapping between he house and fascia but only maybe a 3" opening.  We do know for sure that there is enter way at the garage floor. We will put foam insulation in those areas this weekend to hopefully stop rats or whatever it is up there from entering and will continue our trapping efforts. We live north of Indianapolis IN in the country on one acre. Our house is 7 years old; made of brick. 
By my description, do you have any idea what we might be dealing with, and any suggestions  on how to catch this creature? I appreciate all the info your web site; I just cant find anything that remotely sounds like what we have going on with this creature attempting to bury the traps with insulation. Many thanks for any advice. Jill
Why don't you have a wildlife expert inspect the house and attic in order to determine what the animal is?  It could be raccoons or opossums, not necessarily rats.  The feces and tracks in the attic, and the nature of the entry holes should tell you what animal you're dealing with.
						Indianapolis Rat Control Tip of The Week
						
						What Is The Largest Size A Rat Can Get To Be?
With an average lifespan of about 2 - 3 years, some species of rats can grow as large as 4 pounds. But on average, almost all rats are bigger than mice. Also, the size of a rat fairly depends on the specie and the sex of the rat. Male rats usually are larger than females. They have a longer body frame with tails as long as their body and can grow as big as 2 lbs.
Domesticated rats usually do better when it comes to size mainly because they are provided with all they need to grow properly and healthily. For pet rats, an adult rat can grow to a length of 9 to 11 inches with a tail length of 7 to 9 inches. If properly managed, some large species of rats can even grow as long as 20 inches. It all depends on how well the rats are being managed and taken care of.
One of the most fascinating thing about rats is that having a large body size doesn't mean they won't be able to pass through small openings and enter into your home. Rats can compress their body in order to be able to pass through small openings. Provided the opening is wide enough to allow the easy passage of its head, it will pass through. Therefore, you shouldn't consider the fact that the rats in your neighborhood are too big to gain access to your home through small openings. Instead, you need to seal all small openings up as soon as possible to avoid a rat infestation.
When it comes to rats with large sizes, the Bosavi woolly rat is one of a kind. This specie of rat can weigh up to 3.5 lbs. and grow as long as 32 inches. Although, this particular specie of rat can only be found in volcanic caves.